Apparatus for making porcelain legs



A. HANSEN APPARATUS FOR MAKING PORCELAIN LEGS April 21, 1925.

Filed April 22, 1924' 2 Sheets-Sheet- 1 W/ 7W5$ S INVEN TOR %%%4% 5 2Sheets-Sheet 2 I J I I I l lllll A. HANSEN APPARATUS FOR MAKINGPORCELAIN LEGS April 21, 1925.

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ia 20 mlmiflll Patented Apr. 21 1925.

UNITED STATES ABEL HANSEN, or METUCHEN, NEW JERSEY.

APPARATUS FOR MAKING PORCELAIN LEGS.

Application filed April 22, 1924. Serial No. 708,180.

To all whom it may concern:

Be 1t known that I, ABEL HANSEN, a citizen of the United States, and aresident of Metuchen, county of Middlesex, State of New Jersey, haveinvented certain new and useful Improvements in Apparatus for MakingPorcelain Legs, of which the following is a specification.

In making porcelain legs used to support porcelain tubs, basins and thelike, the clay has been molded mostly by hand, involving not onlyconsiderable hand labor, but resulting in a non-uniform product.

The present invention is directed to the manufacture of such porcelainlegs by molding them in a machine, whereby most of the labor is savedand an absolutely uniform product obtained.

The accompanying drawings illustrate an embodiment of the invention, inwhich Figure 1 is a plan view of' a mold.

Figure 2 is a side elevation of the same.

Figure 3 is an end view of the same.

Figure 4 is a longitudinal vertical section on line i of Figure 1.

Figure 5 is a transverse section through the mold, showing its relationto the molding press.

Figure 6 shows a detail of the end plates, and

Figure 7 shows a horizontal section on line 7-7 of Figure 3.

Referring to the drawings, 1 represents the lower platen of a press,upon which a traveling platen 2 is supported by means of shafts 3 androllers 41, so that the same may he slid in and out of the press.Attached to the platen 2 are mold guides 5 which are preferably made toconverge at one end to conform to the general taper of the leg to bemolded. The mold proper consists of a lower half 6 and an upper half 7,the latter being secured by any. suitable means as by bolts 8, to theplunger or upper platen of the press 9. The upper half is, therefore,raised and lowered with the platen when the latter is operated, forexample, by a screw 10. The lower half 6 of the mold is not attached andcan be pushed upward when the molding operation is completed and themold moved out from under the press by means of a lifting plunger 11,which may be operated by any well known means. At the end of the sideguides 5 are vertical slots, in which are slidably mounted end plates12. These end plates are adapted to form the molds for the ends of theleg and one of them has a slidable boss as at 13 for forming the usualpocket in the upper end of the leg. The boss is made slidable so as tobe retractible to permit of the removal of the leg after molding. Forthis purpose it has a rear stud 15 with which a lever 16, looselypivoted at 17, engages. By means of this lever, the boss can bewithdrawn so as to permit the removal of the molded leg by the operatorpressing inwardly on the outer end of the lever 16 until the boss comesin contact with a fixed stop 18. Springs 19 under the sliding ends,normally tend to hold the ends up against stops 20. The end plates havecentral orifices through which a core rod 21, having a handle 22, may bepassed to form the central hole of the leg. As the springs 19 hold theend plates in a slightly elevated position, it results that the rod 21will be held slightly above the central position of the mold. The objectof this arrangement is to insure that the clay inserted in the mold willhave a sufficient amount below the rod to entirely fill the lower halfof the mold when the same is closed by the press. When the upper half ofthe mold descends upon the clay in the mold, the platen 9 impinges onthe end plates 12 and pushes them down against the resilience of thesprings 19, until the platen rests upon the side guides 5. The endplates will carry the core rod 21 down with them and when the upper andlower halves of the mold meet, the rod will be in the center of themolded leg. Orifices 23 in the side mold guides provide means for theescape of surplus clay when the two halves of the mold come together.

To hold the boss 13 securely in position whilepressure is being appliedto the mold, I provide a latch 24 pivoted on bolt 25 and provided with aslot 26, to enable its free end to engage behind the head of bolt 27.

The operation may be described as follows :-The upper platen of thepress being in its upward position and the mold carrier withdrawn fromunder the same, the operator puts into the mold a lump of clay ofapproximately the amount required to make the leg, it being necessaryalways to have the clay slightly in excess of that which finally formsthe leg. Before or after inserting the clay into the lower half of themold, the rod 21 isinserted in place and the mold, with itsfcarrier,moved into the press against a suitable stop. The upper platen of thepress then is made to descend, pushing the upper half of the mold intothe guides 5, the platen depressing the end plates 12 and with them thecore rod 21, until the parts assume the position shown in Figures at and5, surplus clay, if any, being forced out, as shown in Figure 5. Thecore rod 21 is then withdrawn. The upper platen of the press being againraised, carrying with it the upper half of the mold 7, the mold, withits carrier, is then moved from under the upper platen until it comesagainst a suitable stop where it registers, so that the lifting platenor plunger 1-1 registers with a hole in the bottom of the carrierimmediately under the lower half of the mold, as shown in-Figure 4. Theboss 13 is then withdrawn by the operator pushing-on lever 16, the latch24- having been thrown open. The molded leg may now be raised by theplunger 11 pushing up on the lower half of the mold until a position isreached where the operator can easily remove the leg from the mold. Thisis done by inserting his fingers or wooden pins into the central coredhole and lifting the leg free of the lower half.

1. In a mold for forming porcelain legs in combination, a lower and anupper half, side guides in which said halves have vertical play, and endplates slidable on the side guides and having central orifices forholding a core rod.

2. In a mold for forming porcelain legs in combination, a lower andanupper half, side guides in which said halves have vertical play, endplates slidable on the side guides and having central orifices forholding a core rod, springs for elevating said end plates and stops forlimiting their upward movement.

3. In a mold for forming porcelain legs in combination, a lower and anupper half, side guides in which said halves have vertical play, endplates slidable on the side guides and having central orifices forholding a core rod, and orifices in the side guides registering with themedian line between the upper and lower halves to provide an outletforthe surplus material.

4. In a mold for forming porcelain legs in combination, a lower and anupper half, side guides in which said halves have vertical play, endplates slidable on the side guides and having central orifices forholding a core rod, and an end forming boss slidable through one or" theend plates to form a recess in the top of the leg.

5. In a mold for forming porcelain legs in combination, a lower and anupper hall, side guides in which said halves have vcrti cal play, endplates slid-able on the side guides and having central orifices forholding a core rod, an end forming boss slidable through one of the endplates to form a recess in the top of the leg, and means for lockingsaid boss.

6. In a mold for forming porcelain legs in combination, a lower and anupper half, side guides in which said halves have vertical play, endplates slidable on the side guides and having central orifices forholding a core rod, an end forming boss slid-able through one of the endplates to form a recess in the top of the leg, means for locking saidboss and means for retracting the boss.

ABEL HANSEN.

